11645235544231 has 6 divisors (see below), whose sum is σ = 12370544332760. Its totient is φ = 10960221688416.

The previous prime is 11645235544219. The next prime is 11645235544259. The reversal of 11645235544231 is 13244553254611.

It is a happy number.

It is not a de Polignac number, because 11645235544231 - 2²⁷ = 11645101326503 is a prime.

It is a super-2 number, since 2×11645235544231² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11645235544291) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 20147466051 + ... + 20147466628.

Almost surely, 2^{11645235544231} is an apocalyptic number.

11645235544231 is a deficient number, since it is larger than the sum of its proper divisors (725308788529).

11645235544231 is an equidigital number, since it uses as much as digits as its factorization.

11645235544231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40294932713 (or 40294932696 counting only the distinct ones).

The product of its digits is 1728000, while the sum is 46.

Adding to 11645235544231 its reverse (13244553254611), we get a palindrome (24889788798842).

The spelling of 11645235544231 in words is "eleven trillion, six hundred forty-five billion, two hundred thirty-five million, five hundred forty-four thousand, two hundred thirty-one".